我国已决定停止进口外国未经检验的血液制品,以防止艾滋病的传入,这种措施属于[ ]
A.保护易感者
B.控制传染源
C.切断传播途径
D.人工免疫
答案:C
Which of the following signs and symptoms is classic for a patient with rheumatoid arthritis
A.Joint swelling, joint stiffness in the morning, and bilateral joint involvement.
B.Crepitus, development of Heberden's nodes, and anemia.
C.Pain on weight-bearing, rash, and low-grade fever.
D.Fatigue, leukopenia, and joint pain.
要选择Word文档全文,可用鼠标在选定区()。
A、左单击
B、右单击
C、双击
D、三击